postgres

Commit Graph

Author	SHA1	Message	Date
Tom Lane	89395bfa6f	Improve gist XLOG code to follow the coding rules needed to prevent torn-page problems. This introduces some issues of its own, mainly that there are now some critical sections of unreasonably broad scope, but it's a step forward anyway. Further cleanup will require some code refactoring that I'd prefer to get Oleg and Teodor involved in.	20 years ago
Bruce Momjian	f2f5b05655	Update copyright for 2006. Update scripts.	20 years ago
Tom Lane	49758f4703	Add some missing vacuum_delay_point calls in GIST vacuuming.	20 years ago
Tom Lane	fd267c1ebc	Skip ambulkdelete scan if there's nothing to delete and the index is not partial. None of the existing AMs do anything useful except counting tuples when there's nothing to delete, and we can get a tuple count from the heap as long as it's not a partial index. (hash actually can skip anyway because it maintains a tuple count in the index metapage.) GIST is not currently able to exploit this optimization because, due to failure to index NULLs, GIST is always effectively partial. Possibly we should fix that sometime. Simon Riggs w/ some review by Tom Lane.	20 years ago
Bruce Momjian	77bb65d3fc	Revert based on Tom's recommendation: > Allow VACUUM to complete faster by avoiding scanning the indexes when no > rows were removed from the heap by the VACUUM.	20 years ago
Bruce Momjian	bf324946b3	Allow VACUUM to complete faster by avoiding scanning the indexes when no rows were removed from the heap by the VACUUM. Simon Riggs	20 years ago
Bruce Momjian	436a2956d8	Re-run pgindent, fixing a problem where comment lines after a blank comment line where output as too long, and update typedefs for /lib directory. Also fix case where identifiers were used as variable names in the backend, but as typedefs in ecpg (favor the backend for indenting). Backpatch to 8.1.X.	20 years ago
Tom Lane	6236991143	Add simple sanity checks on newly-read pages to GiST, too.	20 years ago
Bruce Momjian	b3364fc81b	pgindent new GIST index code, per request from Tom.	21 years ago
Tom Lane	08817bdb76	Adjust GiST error messages to conform to message style guidelines.	21 years ago
Tom Lane	35e9b1cc1e	Clean up a couple of ad-hoc computations of the maximum number of tuples on a page, as suggested by ITAGAKI Takahiro. Also, change a few places that were using some other estimates of max-items-per-page to consistently use MaxOffsetNumber. This is conservatively large --- we could have used the new MaxHeapTuplesPerPage macro, or a similar one for index tuples --- but those places are simply declaring a fixed-size buffer and assuming it will work, rather than actively testing for overrun. It seems safer to size these buffers in a way that can't overflow even if the page is corrupt.	21 years ago
Teodor Sigaev	898a7bd13b	Bug fixes for GiST crash recovery. - add forgotten check of lsn for insert completion - remove level of pages: hard to check in recovery - some cleanups	21 years ago
Teodor Sigaev	4523e0b63a	Cleanup, remove unneeded pallocs	21 years ago
Teodor Sigaev	88b49cdc95	Code cleanup. gistfillbuffer accepts InvalidOffsetNumber.	21 years ago
Teodor Sigaev	e8cab5fe49	Concurrency for GiST - full concurrency for insert/update/select/vacuum: - select and vacuum never locks more than one page simultaneously - select (gettuple) hasn't any lock across it's calls - insert never locks more than two page simultaneously: - during search of leaf to insert it locks only one page simultaneously - while walk upward to the root it locked only parent (may be non-direct parent) and child. One of them X-lock, another may be S- or X-lock - 'vacuum full' locks index - improve gistgetmulti - simplify XLOG records Fix bug in index_beginscan_internal: LockRelation may clean rd_aminfo structure, so move GET_REL_PROCEDURE after LockRelation	21 years ago
Teodor Sigaev	1bfdd1a893	fix founded hole in recovery after crash, add vacuum_delay_point()	21 years ago
Teodor Sigaev	d544ec8bbd	1. full functional WAL for GiST 2. improve vacuum for gist - use FSM - full vacuum: - reforms parent tuple if it's needed ( tuples was deleted on child page or parent tuple remains invalid after crash recovery ) - truncate index file if possible 3. fixes bugs and mistakes	21 years ago

17 Commits (89395bfa6f2fafccec10be377fcf759030910654)